When a large folder or file (like a high-definition video, a software installer, or a large dataset) is too big to upload or share as one piece, it is "split" into parts labeled .part1.rar , .part2.rar , etc.
This is a compressed format created by WinRAR. To open it, you need all the parts of the set in the same folder. How to see the "text" or content inside: R8.part1.rar
Use software like WinRAR , 7-Zip , or The Unarchiver (for Mac). When a large folder or file (like a